--- service: d.root-servers.net start-period: '2016-02-04T00:00:00Z' end-period: '2016-02-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4832643748 dns-udp-queries-received-ipv6: 430669339 dns-tcp-queries-received-ipv4: 22448257 dns-tcp-queries-received-ipv6: 633349 dns-udp-responses-sent-ipv4: 4816133246 dns-udp-responses-sent-ipv6: 430506629 dns-tcp-responses-sent-ipv4: 22425547 dns-tcp-responses-sent-ipv6: 633023